mqttx-cli SKILL.md skillA

mqttx-cli from emqx/mqttx is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add emqx/mqttx/mqttx-cli@git:20261104.6e78afd

Pins git:20261104.6e78afd in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: emqx/mqttx
Path: skills/mqttx-cli/SKILL.md
Versions recorded: 3
Latest version: git:20261104.6e78afd, committed Nov 4, 2026
First version recorded: Sep 20, 2026
Size: 7,750 bytes
Repository stars: 5,090
License: Apache-2.0

Use MQTTX CLI for MQTT connections, publishing and subscriptions, MQTT 5 features, TLS and SCRAM authentication, payload codecs and schemas, benchmarks, built-in or custom data simulation, configuration, installation and troubleshooting. Use when operating or testing MQTT through the mqttx command. Does not operate MQTTX Desktop or administer a broker.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# MQTTX CLI

## Prepare

1. Locate `mqttx`, read `mqttx --version`, then inspect `mqttx <command> --help` for the task. Treat installed help as authoritative; release channels can differ. If missing or a required feature is unavailable, follow the repository's root `INSTALL.md`, or its [standalone installation guide](https://github.com/emqx/MQTTX/blob/main/INSTALL.md) when this skill has been copied elsewhere. Do not update a working CLI on every invocation.
2. Establish the broker hostname, port, transport (`mqtt`, `mqtts`, `ws`, `wss`), MQTT version, credentials, topic and intended operation from the user's context. Ask only for missing information that affects execution. Use the requested broker; do not substitute a public broker after a failure.
3. Account for `~/.mqttx-cli/config`, which can supply default host, port, protocol and credentials. Do not print its secrets or overwrite it for a one-off task. Explicit CLI arguments override defaults; `--load-options` loads command-specific JSON/YAML options, with explicitly supplied CLI arguments taking precedence. See [configuration and utility commands](references/configuration.md) for initialization, saving and loading.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add emqx/mqttx/mqttx-cli@sha256:1a57db98c171ef88

The line at the top of this page pins the label git:20261104.6e78afd, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_tkgho2k7aith6q3w.svg)](https://markdownregistry.com/a/art_tkgho2k7aith6q3w)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Sep 20, 2026 and Nov 4, 2026, about one every 23 days.

version	committed	commit	size	audit
git:20261104.6e78afd latest	2026-11-04	6e78afd	7,750 B	A	view · diff
git:20261104.5072a80	2026-11-04	5072a80	7,915 B	A	view · diff
git:20260920.fcc5772	2026-09-20	fcc5772	7,725 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (7750 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

emqx/mqttx · 5,090 stars · license Apache-2.0 · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_tkgho2k7aith6q3w
GET https://markdownregistry.com/api/v1/resolve?ref=emqx/mqttx/mqttx-cli
GET https://markdownregistry.com/api/v1/blob/1a57db98c171ef88cb8a48b135808f8f5bd0c56ac8717df87cc0b77c4145d061

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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